I spent some time setting up, calibrating, and listening to the new T8's in my system. These are pretty amazing speakers. In comparison to the 850 Rockets, the T8 show some distinct differences as one would expect. For movies and TV viewing, there really isn't much to compare. The T8's dominate completely. The sensitivity, dynamics, and clarity at all listening levels put the T8's at a total advantage for listening to video soundtracks.
For music, there are some tradeoffs. Compared with the Rockets and their smooth-sounding Vifa ring radiator tweeter, the JTR's lose some "air" and some apparent width of the soundstage when listening to two-channel music. However, the tremendous dynamics and midrange clarity give the music a distinct "live" sound that the Rockets couldn't hope to approach even though they are not too bad in the area of dynamics for a system of only medium sensitivity. For me, I believe the tradeoff is worth it. I listen to live music often, sometimes a couple of times a week and this is the standard that I use to judge how a sound system sounds to my ears. The T8's have allowed my system to sound closer to "live" than it ever has before. Well-recorded live performances sound particularly fresh. For example, the excellent Diana Krall "Live in Paris" has never sounded better to me than it did today. The piano is an instrument which can be a dead giveaway as to when either a speaker, an amp, or both are reaching their limits dynamically or beginng to distort. Those notes can begin to become noticeably "brittle" sounding. I was not able to cause this to happen at any tolerable level I tried. I'm really not sure of how high these speakers' limits are and I may never be able to find out. My hearing is likely to give out first. It makes me wonder why anyone would have a need to go to the T12's unless they need to use a lower crossover for some reason. It's incredible how much sound a fairly compact (although quite heavy and solid) speaker like the T8 can put out.
Integrating the T8's with their stereo SVS SB12-Plus bases was not too much of a problem. It did require some tweaking of the phase controls on the subs to improve the blend. This photo shows the result of the T8 - SB12 integration with a crossover at about 100hz. This is prior to using any eq or Audyssey. At 40hz, this combo is crossed over to the big subs. Those are not running in this photo.